An electrician has wired a 2kW bathroom heater in my house using 1.0mm cable from a 6A mcb, as part of the lighting circuit. It works fine.
However, my maths suggest that 2kW = about 8A, which exceeds the mcb rating. According to the DIYnot website, 1.0mm cable is suitable for up to 2400 watt loads, so 1.0 cable seems to be adequate (just), but not the mcb.
If I plug a 2kW kettle in my kitchen, I use a circuit made up from 2.5mm cable from a 32A mcb
Shouldn't the bathroom heater be run off a higher rated circuit?
Confused.
However, my maths suggest that 2kW = about 8A, which exceeds the mcb rating. According to the DIYnot website, 1.0mm cable is suitable for up to 2400 watt loads, so 1.0 cable seems to be adequate (just), but not the mcb.
If I plug a 2kW kettle in my kitchen, I use a circuit made up from 2.5mm cable from a 32A mcb
Shouldn't the bathroom heater be run off a higher rated circuit?
Confused.